Bruno Ameduri

École Nationale Supérieure de Chimie de Montpellier · Institut Charles Gerhardt

‘Click’ reactions are a unique class of versatile synthetic tools used in organic and polymer chemistry to develop new materials. The high efficiency of the click reactions, combined with their easy and straightforward execution, have made them an inevitable tool for the development of a variety of advanced polymer materials with tailor-made archit...

Tetrafluoroethylene (TFE) terpolymers have emerged as advantageous substitutes for polytetrafluoroethylene (PTFE). Therefore, they are being considered as alternatives to PTFE in many application areas. The advantages of TFE terpolymers include their facile processability at elevated temperatures, their solubility in some polar organic solvents, th...

Polytetrafluoroethylene (PTFE) exhibits outstanding properties such as high‐temperature stability, low surface tension, and chemical resistance against most solvents, strong acids, and bases. However, these traits make it challenging to subject PTFE to standard polymer processing procedures, such as thermoforming and hot incremental forming. While...

Biological processes in soil pores are critical to crop nutrition and productivity, but live observations of these processes at that scale have been difficult to accomplish. To address this challenge, we have developed new techniques for the fabrication of microcosms dedicated to live imaging of the rhizosphere which incorporate the ability to cont...

Fluorinated proton-exchange membranes (PEMs) based on graft copolymers of dehydrofluorinated polyvinylidene fluoride (D-PVDF), 3-sulfopropyl acrylate (SPA), and 1H, 1H, 2H-perfluoro-1-hexene (PFH) were prepared via free radical copolymerization and characterized for fuel cell application. The membrane morphology and physical properties were studied...

To solve the problem of low utilization rate of conventional fast water-soluble release fertilizers and to minimize their negative impact on the environment, slow-release fertilizers (SRF) have emerged as sustainable...

In contrast to some low-molar-mass per- and polyfluoroalkyl substances (PFASs), which are well established to be toxic, persistent, bioaccumulative, and mobile, fluoropolymers (FPs) are water-insoluble, safe, bioinert, and durable. These niche high-performance polymers fulfil the 13 polymer-of-low-concern (PLC) criteria in their recommended conditi...

Fluorinated elastomers (FEs) are unique materials bearing exceptional properties and involved in High Tech applications (electronics, car, aerospace, and petrochemical industries and microelectronics) where they resist to stringent conditions, showing peculiar softness and resilience over a wide range of temperatures. This article mainly reports on...

Aims Our understanding of the rhizosphere is limited by the lack of techniques for in situ live microscopy. Current techniques are either destructive or unsuitable for observing chemical changes within the pore space. To address this limitation, we have developed artificial substrates, termed smart soils, that enable the acquisition and 3D reconstr...

Core–double-shell-structured nanocomposite films consisting of polyvinylidene fluoride-grafted-barium titanate (PVDF-g-BT) incorporated into a P(VDF-co-hexafluoropropylene (HFP)) copolymer matrix were produced via a solution mixing method for energy storage applications. The resulting films were thoroughly investigated via spectroscopic, thermal, a...

Hydrophilic materials display "bio-inert properties", meaning that they are less recognized as foreign substances by proteins and cells. Such materials are often water soluble; therefore, one general approach to enable the use of these materials in various applications deals with copolymerizing hydrophilic monomers with hydrophobic ones to facilita...

Herein, we present the state of the art technology on the recycling, reuse, thermal decomposition (by thermolysis, thermal processing, flash pyrolysis, smoldering, open burning, open-air detonation, and incineration), and the life cycle assessment of fluoropolymers (FPs, ranging from poly(tetrafluoroethylene), PTFE, and poly(vinylidene fluoride), P...

The copolymerization and terpolymerization of 1,1,3,3,3-pentafluoropropene (PFP) with various combinations of fluorinated and hydrogenated comonomers were investigated. The chosen fluoromonomers were vinylidene fluoride (VDF), 3,3,3-trifluoropropene (TFP), hexafluoropropene (HFP), perfluoromethylvinyl ether (PMVE), chlorotrifluoroethylene (CTFE) an...

New fluorinated polyhydroxyurethanes (FPHUs) with various molar weights were synthesized via the polyaddition reaction of a fluorinated telechelic bis(cyclocarbonate) (bis-CC) with a diamine. The fluorinated bis-CC was initially synthesized by carbonylation of a fluorinated diepoxide, 1,4-bis(2′,3′-epoxypropyl)perfluorobutane, in the presence of Li...

Dielectric properties of poly(vinylidene fluoride)-grafted-BaTiO3 (PVDF-g-BT) core-shell structured nanocomposites obtained from Reversible Addition Fragmentation chain Transfer (RAFT) polymerization of VDF were investigated by Broadband Dielectric Spectroscopy (BDS). The dielectric constant increased along with the BT content, about +50% by additi...

Mineralization of poly(vinylidene fluoride) (PVDF), poly(vinylidene fluoride-co-hexafluoropropylene) [poly(VDF-co-HFP)] copolymer, and poly(ethylene-co-tetrafluoroethylene) copolymer (ETFE) in superheated water in the presence of an alkaline reagent was investigated with the aim of developing a technique to recycle the fluorine element. These polym...

The radical copolymerization of VDF with M monomer, their properties and applications are presented. First, after listing a non-exhaustive series of comonomers and macromonomers, and their reactivity towards VDF deduced from the kinetics of copolymerizations to suggest a reactivity order. This review proposes non-exhaustive examples of conventional...

In summary, several multifaceted approaches have been adopted to improve the performance and efficiency of energy-harvesting devices and particularly, in piezoelectric and pyroelectric hybrid NGs. The energyharvesting ability is not limited to the enhancement of the figures of merit of the material used but also to the engineering of both the devic...

Electrospinning is a unique and versatile technique to produce fine submicrometric fibers and nanofibrous membranes from polymer solution or melt. In the last decade, fluorinated polymers (particularly polyvinylidene fluoride, PVDF, VDF copolymers and polytetrafluoroethylene, PTFE) have attracted significant attention in electrospinning processes....

The usefulness of fluoropolymers (PFs) in various items for vehicles, shuttles, and space‐crafts is presented, considering their synthesis, properties, applications, and recycling. The advantages of FPs are first supplied, including outstanding properties (chemical, oxidative, and thermal resistances, and excellent weatherability and durability to...

The synthesis of new functionalized vinyl ethers (VEs) by transetherification reaction between ethyl vinyl ether (EVE) and different alcohols is presented. An air-stable palladium catalyst generated in situ efficiently catalyzed the reaction leading to various VEs in a single step with good alcohol conversion (50–82%) and good VE yields (up to 75%)...

Piezoelectric and ferroelectric polymers are materials that display many advantages, such as lightweight, low cost, flexibility, ease of processing, and high electric breakdown strength, which make them promising candidates in the dielectric field. Moreover, and due to their unique features, they can be exploited in many technologies, such as in se...

Elsevier ISBN : 9780128241554

Agriculture must reduce green-house gas emission and pollution, produce safer and healthier food, closer to home, reducing waste whilst delivering more diverse diets to a growing world population. Soils could enable this transformation, but unfortunately, they have a hugely complex and opaque structure and studies of its myriad of mechanisms are di...

Significance The lack of suitable approaches for studying root–microbe interactions, live and in situ, has severely limited our ability to understand the rhizosphere. In this study, we overcome this major limitation with an imaging system that combines transparent soils with cutting edge light sheet microscopy. The study revealed that the root cap...

The Diels-Alder (DA) reaction is regarded as quite a useful strategy in organic and macromolecular syntheses. The reversibility of this reaction and the advent of self-repair technology, as well as other applications in controlled macromolecular architectures and crosslinking, have strongly boosted the research activity, which is still attracting a...

New copolymers based on vinylidene fluoride (VDF) and 2,3,3,3-tetrafluoroprop-1-ene (1234yf) were synthesized by organometallic-mediated radical copolymerization (OMRcP) using the combination of bis(tert-butylcyclohexyl) peroxydicarbonate initiator and bis(acetylacetonato)cobalt(II), (Co(acac)2) as a controlling agent. Kinetics studies of the copol...

2-Trifluoromethacrylic acid (MAF) is a peculiar fluorinated functional monomer. Though it is known to polymerise via CC bond cleavage under anionic initiation, its oxa-Michael addition polymerisation afforded polyesters bearing trifluoromethyl side groups. This oxa-Michael addition was attempted in the presence of radical (peroxides), basic (amines...

Fluoropolymers constitute an attractive family of polymeric materials with remarkable properties such as high resistance to chemicals, UV and heat, ferroelectricity and piezoelectricity for semi-crystalline polymers, to name a few....

A new approach for preparing slow-release membranes encapsulated diammonium phosphate (DAP) fertilizer with waterborne polymers is presented. Latex dispersions based on butyl methacrylate (BMA) and 2-(perfluorohexyl)ethyl acrylate (PFA) were successfully synthesized by emulsion (co)polymerization using starch nanocrystals (SNC) as a pickering stabi...

A new approach for preparing slow-release membranes encapsulated diammonium phosphate (DAP) fertilizer with waterborne polymers is presented. Latex dispersions based on butyl methacrylate (BMA) and 2-(perfluorohexyl)ethyl acrylate (PFA) were successfully synthesized by emulsion (co)polymerization using starch nanocrystals (SNC) as a pickering stabi...

The radical telomerisation of vinylidene fluoride (VDF) with 2-mercaptoethanol as chain transfer agent (CTA) was studied to synthesise fluorinated telomers which bear a hydroxy end-group, such as H(VDF)nS(CH2)2OH, under thermal (di-tert-butyl peroxide as the initiator) or photochemical initiations. A careful structural study of a typical H-VDF-S(CH...

Well-defined fluoropolymers exhibit unique properties such as excellent oil and water repellency, satisfactory thermal stability, a low refractive index, and low surface energy. The origin of these properties is attributed to the presence of a strong electronegative and low polarizable fluorine atom in the backbone of such polymers, which leads to...

This article is the first report of the RAFT polymerisation of trifluoroethylene (TrFE). Trifluoroethylene is a rare but very important fluoromonomer, as it allows the preparation of materials endowed with...

Our understanding of plant-microbe interactions in soil is limited by the difficulty of observing processes at the microscopic scale throughout plants' large volume of influence. Here, we present the development of 3D live microscopy for resolving plant-microbe interactions across the environment of an entire seedling growing in a transparent soil...

Mineralization of a fluorotelomer surfactant containing a C6F13 end-group (FSC), in hot and superheated water was studied. The process was optimized by variation of parameters such as temperature and the presence or absence of O2, Ar, KMnO4 and K2S2O8. Treatment of FSC with a combination of KMnO4 and O2 efficiently decomposed the surfactant to F⁻,...

The hydrogen peroxide initiated radical polymerization of vinylidene fluoride (VDF) at 130 °C in dimethyl carbonate is presented. Various reaction parameters such as the nature of the solvent, the nature and the amount of the co-initiator, and the reaction temperature were optimized. Hydrogen peroxide was activated by azobisisobutyronitrile (AIBN),...

Shape, size, and morphology controlled synthesis of monodispersed silica nanoparticles using 3-hydroxy-2-(trifluoromethyl)-propanoic acid (MAF-OH) surfactant.

Trifluoroethylene (TrFE) is a relatively rare fluorinated monomer mainly used in copolymerisation with vinylidene fluoride (VDF) to prepare ferroelectric materials. While the VDF homopolymerisation has been relatively well studied, that...

Solid polymer electrolytes are prepared by mixing various amounts of lithium bis(trifluoromethanesulfonyl)imide with poly(vinylidene fluoride‐co‐vinyl dimethyl phosphonate) statistical copolymers with different compositions. Such copolymers are obtained by conventional radical copolymerization of vinylidene fluoride (VDF) with vinyl dimethyl phosph...

The synthesis of fluorinated dual-responsive block terpolymers via sequential reversible addition–fragmentation chain transfer (RAFT) polymerization is presented. The resulting block terpolymers consist of a hydrophobic block which comprises an alternating copolymer of tert-butyl-2-trifluoromethacrylate (MAF-TBE) and vinyl acetate (VAc) (Mn = 9,800...

Novel triethoxysilane and dimethyl phosphonate functional vinylidene fluoride (VDF)-containing terpolymers, for potential applications in Eu ion extraction from water, were produced by conventional radical terpolymerization of VDF with vinyltriethoxylsilane (VTEOS) and vinyldimethylphosphonate (VDMP). Although initial attempts for the copolymerizat...

An overview on fluorinated olefin-based architectures prepared by reversible deactivation radical polymerization (RDRP) techniques and their applications is presented. Controlled syntheses of well-defined fluoropolymers are discussed as a route to prepare tailored macromolecules of various architectures, such as homopolymers, block copolymers (BCPs...

This review aims at updating various studies to design BaTiO3@polymer/Fluoropolymer nanocomposites, to study their properties and performances and to supply their applications. Dielectric nanocomposite materials with high energy density exhibit promising performances for energy storage applications. Major efforts have been performed to combine the...

Proton exchange membranes designed via reactive extrusion from the in situ generation of functional silica-like particles in a new poly(vinylidene fluoride-co-hexafluoropropylene (poly(VDF-co-HFP)) copolymer are presented. These sulfonic acid-functionalized polysiloxane-based fillers were synthesized via sol-gel chemistry from 3-mercaptopropyltri(e...

This article aims at showing the usefulness of fluoropolymers (FPs), supplying an overview of their synthesis, applications, and recycling. FPs are currently prepared by conventional radical polymerization of fluoromonomers. These specialty polymers, produced in low tonnage compared to that of commodity ones, display outstanding properties, such as...

The use of [Mn(RF)(CO)5] (RF = CF3, CHF2, CH2CF3, COCF2CH3) to initiate the radical polymerization of vinylidene fluoride (F2C=CH2, VDF) and the radical alternating copolymerization of vinyl acetate (CH2=CHOOCCH3, VAc) with tert-butyl 2-(trifluoromethyl)acrylate (MAF-TBE) by generating primary RF • radicals is presented. Three different initiating...

A fluorosurfactant based on 3,3,3-trifluoropropene (TFP) telomer was synthesized as an environmentally friendly alternative to perfluorooctanoic acid (PFOA) using TFP and 2-iodoperfluoropropane ((CF3)2CF–I) as starting materials. TFP telomerization was initiated by addition of di-tert-butylperoxide in the presence of (CF3)2CF–I as a chain transfer...

This review highlights the synthesis, properties and applications, as well as the potential, of poly(vinylidene fluoride) (PVDF)-based complex macromolecular architectures (CMAs), a class of materials that has not received much attention in the literature. PVDF, the second in production fluoropolymer, is an attractive material due to its outstandin...

Our demanding modern lifestyle, environmental, and economic needs have required a tremendous shift in the design requirements for modern buildings and have resulted in an ever-increasing use of nontraditional engineered materials such as architectural textiles. Because of their outstanding properties, fluoropolymers play an unparalleled role in arc...

Several strategies to synthesize fluorinated (co)polymers containing phosphorous groups and their applications are reviewed. First, original fluoromonomers bearing phosphorous atoms are supplied from relevant routes. They may possess fluorinated atoms linked to the ethylenic carbon atoms with different structures, such as F2C=CF- or H2C=C(CF3)- and...

The synthesis of poly(vinylidene fluoride)-graft-oligomeric hexafluoropropylene oxide graft copolymers [poly[VDF-g-oligo(HFPO)-PIPE] is presented, where VDF, HFPO, and PIPE stand for vinylidene fluoride (CH2=CF2), hexafluoropropylene oxide (CF3CFCF2O) and, perfluoroisopropenylether (-OC(CF3)=CF2), respectively. First, an 82% isolated yield of oligo...

Radical emulsion copolymerization of acrylonitrile (AN) with 2,2,2-trifluoroethyl methacrylate (MATRIF) and their homopolymerization initiated by potassium persulfate (KPS) were studied. The resulting P(AN-co-MATRIF) copolymers were characterized by 1H, 13C NMR...

Compound (1‐carbomethoxyethyl)pentacarbonylmanganese(I), [MnR(CO)5] (R = CHMeCOOMe, 1), was synthesized from K⁺[Mn(CO)5]– and methyl 2‐bromopropionate and isolated in pure form. Upon thermal activation, the Mn–R bond is homolytically cleaved and the resulting 1‐carbomethoxyethyl radical is able to initiate the polymerization of methyl acrylate (MA)...

Reactions of poly(vinylidene fluoride) [PVDF], poly(vinylidene fluoride-co-hexafluoropropylene) [poly(VDF-co-HFP)] copolymer, and poly(vinylidene fluoride-co-perfluoromethyl vinyl ether) [poly(VDF-co-PMVE)] copolymer in subcritical water were performed with the aim to develop a technique for recycling fluorine element. By addition of KMnO4 to the s...

The radical copolymerisation of vinylidene fluoride (VDF) with vinyl dimethyl phosphonate (VDMP) initiated by various kinds of initiators is presented. First, an optimisation of the nature of the initiator on the yield of the reaction was achieved showing that 2,5-dimethyl-2,5-di(tert-butylperoxy) hexane was the most efficient one, leading to the b...

A poly(3-hexylthiophene)-block-perfluoropolyether-block-poly(3-hexylthiophene) (P3HT-b-PFPE-b-P3HT) triblock copolymer was synthesized by copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC) in 95% yield. The copolymer was unequivocally characterized by size exclusion chromatography reaching 27 000 g mol(-1) and nuclear magnetic resonance (NMR)....

Polymeric ionic liquids (PILs) have recently been attracting great attention as new types of electrolytes for polymer exchange membrane fuel cells (PEMFCs), clean energy devices, due to their outstanding properties. In this work, the copolymerization of the ionic liquid (IL) 1-(4-sulphobutyl)-3-vinylimidazolium trifluoromethanesulphonate, [HSO3-BVI...

The title compound, [Mn{SC(O)CF2CH3}(CO)5], has been isolated as a by-product during the reaction of K[Mn(CO)5] with CH3CF2COCl. It is built up from a di­fluoro­methyl­propane­thio­ate bonded to an Mn(CO)5 moiety through the S atom. The Mn atom has an almost perfect octa­hedral coordination sphere. It is one of the rare examples of compounds contai...

The radical terpolymerizations of perfluoro(8-cyano-5-methyl-3,6-dioxaoct-1-ene) (CNVE) or 2,2,3,3,4,4,5,5,6,6-decafluoro-6 -[(1,2,2-trifluoroethenyl) oxy] hexanenitrile (MV5CN) with vinylidene fluoride (VDF) and perfluoro(4-methyl-3,6-dioxaoct-7-ene) sulfonyl fluoride are presented. Changing the feed compositions of these three fluorinated comonom...